Home / 4,139.66-6,209.50-2,912.56

Finding the Fourth Proportional to 4,139.66, 6,209.50 and 2,912.56

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Solution

The fourth proportional to 4,139.66, 6,209.50 and 2,912.56 is: 4,368.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.66 : 6,209.50 = 2,912.56 : x
  2. Step 2: Convert to fraction form
    4,139.66/6,209.50 = 2,912.56/x
  3. Step 3: Cross multiply
    4,139.66x = 6,209.50 × 2,912.56
  4. Step 4: Simplify right side
    4,139.66x = 18,085,541.32
  5. Step 5: Solve for x
    x = 18,085,541.32/4,139.66
  6. Step 6: Final answer
    x = 4,368.85

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.